Whetstone holder



FIG. 1 is a front view of a whetstone holder showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view of a whetstone holder showing my new design; and,

FIG. 8 is another perspective view thereof.

The broken lines in the figures are for the purposes of illustrating portions of the whetstone holder, which form no part of the claimed design. 

CLAIM The ornamental design for a whetstone holder, as shown and described. 